I haven't played the series too much, but Vesperia has some really shitty dungeons that are literally a bunch of squared rooms connected corridors, or even just corridors without any puzzles or something for the sorcerer's ring (like the one I just finished, Relewiese Hollow). People shit on Symphonia for being too gimmicky, but at least the, dungeons felt more complex.

The overworld and the optional stuff is great tho (if you have gamefaqs by your side).